Assignee
CHANG CHERNG
6 granted patents·6 pending applications·139 citations·filing 1978–2011
Top patents by PatentIndex Score
12 records- 0189US4266127AMass spectrometer for chemical ionization and electron impact ionization operationCHANG CHERNG·Filed 1978·Granted May 5, 1981·30 cites·51 claims
- 0287US4377745AMass spectrometer for chemical ionization, electron impact ionization and mass spectrometry/mass spectrometry operationCHANG CHERNG·Filed 1981·Granted Mar 22, 1983·33 cites·22 claims
- 0383US7117621B2Three dimensional framed display and frame calendarCHANG CHERNG·Filed 2003·Granted Oct 10, 2006·23 cites·20 claims
- 0462US7140137B2Spring loaded holdersCHANG CHERNG·Filed 2003·Granted Nov 28, 2006·8 cites·18 claims
- 0561US2009265972A1Sheet holdersCHANG CHERNG·Filed 2008·Application pending·0 cites
- 0659US5213028AMultiple purpose cooking utensil systemCHANG CHERNG·Filed 1992·Granted May 25, 1993·22 cites·18 claims
- 0758US2007234602A1Art sheets storage, display and retrieval systemsCHANG CHERNG·Filed 2007·Application pending·0 cites
- 0855US2006174530A1Spring-loaded holdersCHANG CHERNG·Filed 2006·Application pending·0 cites
- 0952US5154114AMultiple purpose cooking utensil systemCHANG CHERNG·Filed 1991·Granted Oct 13, 1992·23 cites·16 claims
- 1051US2006255702A1Art sheets storage, display and retrieval systemsCHANG CHERNG·Filed 2005·Application pending·0 cites
- 1149US2011320384A1Stock market filtersCHANG CHERNG·Filed 2011·Application pending·0 cites
- 1248US2011320383A1Stock market filtersCHANG CHERNG·Filed 2010·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →